Kusumawati, E., and K. Khairuddin. “INSTRUCTIONS, COMIC STRIPS AND ESP READING COMPREHENSION”. Seminar Nasional Sistem Informasi (SENASIF), Vol. 1, no. 1, Sept. 2017, pp. 141 -51, https://jurnalfti.unmer.ac.id/index.php/senasif/article/view/34.